X-ray relative intensities at incident photon energies across the LiLi (i=1–3i=1–3) absorption edges of elements with 35≤Z≤9235≤Z≤92

• The L X-ray relative intensities and Lα1 XRP cross sections are evaluated using physical parameters based on the IPA models.
• Comparison of the intensity ratios evaluated using the DHS and DF models based photoionization cross sections is presented.
• Importance of many body effects including electron exchange effects is highlighted.

The intensity ratios, ILk/ILα1ILk/ILα1 (k=l,η,α2,β1,β2,15,β3,β4,β5,7,β6,β9,10,γ1,5,γ6,8,γ2,3,γ4k=l,η,α2,β1,β2,15,β3,β4,β5,7,β6,β9,10,γ1,5,γ6,8,γ2,3,γ4) and ILj/ILαILj/ILα (j=β,γj=β,γ), have been evaluated at incident photon energies across the LiLi (i=1–3i=1–3) absorption edge energies of all the elements with 35≤Z≤9235≤Z≤92. Use is made of what are currently considered to be more reliable theoretical data sets of different physical parameters, namely, the LiLi (i=1–3i=1–3) sub-shell photoionization cross sections based on the relativistic Hartree–Fock–Slater (RHFS) model, the X-ray emission rates based on the Dirac–Fock model, and the fluorescence and Coster–Kronig yields based on the Dirac–Hartree–Slater model. In addition, the Lα1Lα1 X-ray production cross sections for different elements at various incident photon energies have been tabulated so as to facilitate the evaluation of production cross sections for different resolved LL X-ray components from the tabulated intensity ratios. Further, to assist evaluation of the prominent (Li−SjLi−Sj) (Sj=MjSj=Mj, NjNj and i=1–3i=1–3, j=1–7j=1–7) resonant Raman scattered (RRS) peak energies for an element at a given incident photon energy (below the LiLi sub-shell absorption edge), the neutral-atom electron binding energies based on the relaxed orbital RHFS calculations are also listed so as to enable identification of the RRS peaks, which can overlap with the fluorescent X-ray lines.